Adjusting ballistic valve timing
US7823548B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2008 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | May 28, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method to adjust timing of an electrically actuated valve, said electrically actuated valve operating in a cylinder of an internal combustion engine, the method comprising during a cycle of said cylinder, opening said electrically actuated valve at a first valve opening position without activating a valve opening coil, and closing the valve at a first closing position; and during a second subsequent cycle of said cylinder, opening said electrically actuated valve at a second opening position that is varied based on the crankshaft angle at which said first closing occurs, where the second opening position is increased as said the crankshaft angle at which the first closing occurs increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.